在非elastomeric材料上冰粘附的预测模型
Sina Nazifi1, Rojan Firuznia1, Zixu Huang1
1Department of Mechanical Engineering, University of Houston, 4726 Calhoun Rd, Houston, TX 77204, USA.
Journal of colloid and interface science
|June 11, 2023
概括
一个新的模型通过包括基板效应来解释冰的粘附,解决了为什么流冰材料的变化. 这为基础设施和交通工具开发耐用,冰粘度低的材料提供了指导.
科学领域:
- 材料科学 材料科学 材料科学
- 表面科学是一门学科.
- 工程物理学 工程物理
背景情况:
- 冰块在表面积累给基础设施,交通和能源带来了风险.
- 现有的冰粘强度模型无法解释基板变化.
- 底层基板对冰粘附的影响被忽视了.
研究的目的:
- 开发一个全面的冰粘强度预测模型.
- 为了研究底层基板在冰粘附中的作用.
- 为了解释不同实验室测量冰粘附度的变化.
主要方法:
- 在多层材料上使用剪切力方法开发了冰粘附的预测模型.
- 嵌入涂层的切削阻力和切削应力转移到基板中的模型.
- 使用各种涂层和基板特性对模型进行实验验证.
主要成果:
- 该模型强调了底层基板在确定冰粘附强度方面的关键作用.
- 冰粘附度和涂层厚度之间的关系在弹性材料和非弹性材料中显著不同.
- 该模型成功地解释了不同研究中的冰附着度测量的变化.
结论:
- 开发的模型为理解和预测冰粘附提供了一个框架.
- 它阐明了如何实现具有低冰粘度和高机械耐久性的材料.
- 这项研究促进了设计先进的破冰材料的创新,用于各种应用.
相关概念视频
01:14Adhesion
40.1K
Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules.
Capillary action is a result of water’s adhesive tendencies. When a narrow...
Capillary action is a result of water’s adhesive tendencies. When a narrow...
40.1K
02:57Surface Tension, Capillary Action, and Viscosity
28.1K
Surface Tension
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
28.1K